A-LevelPhysicsDynamicsOct/Nov 2016Paper 1 Q131 Mark
A light ball is falling vertically through air. The variation with time t of the resistive force Fᵣ acting on the ball is shown. [Figure 13.1] At which times are the speed of the ball zero, the speed at a maximum and the acceleration zero?
Azero speed: t₁, maximum speed: t₂, zero acceleration: t₁
Bzero speed: t₁, maximum speed: t₂, zero acceleration: t₂
Czero speed: t₂, maximum speed: t₁, zero acceleration: t₁
Dzero speed: t₂, maximum speed: t₁, zero acceleration: t₂
✓ Correct Answer
The correct answer is B: zero speed: t₁, maximum speed: t₂, zero acceleration: t₂
📋 Examiner Report & Trap Analysis
Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
🎯 Mark Scheme Breakdown
Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.
🔒
Unlock the Examiner's Analysis
Sign up for free to reveal the full examiner report, trap analysis, and mark scheme breakdown for this question.
Sign Up Free to Unlock →Join thousands of Cambridge students already using Oracle Prep